- Absence of response (CR, PR, marrow CR or HI according to IWG 2006) after a minimum of 6 cycles of azacitidine single agent at 75 mg/m²/d for 7 days per cycle. Patients with a previous dose reduction of AZA may be eligible if the maximum tolerated dose was equal to or above 350mg/m2/cycle (i.e. 50 mg/m²/d for 7 days or 75mg/m2/d for 5 days).